how can iphone automatically switch to strongest wifi signal at home
I have an iphone 4 with iOS 5.0.1 installed. Because of all the concrete floors in our house, our main wifi router cannot supply a strong signal to the upper floors. Therefore I have installed a range extender on one of the upper floors. When I am downstairs, the ihpone logs on automatically to the main signal, which is the strongest. When I go to one of the higher floors, it doesn't switch automatically to the extender signal, which becomes the stronger signal then. It still maintains its connection to the main router downstairs, which has then turned into a poor connection with only one dot on the wifi icon and endless loading times with frequent errors.
The iphone is setup for both the main router and the extender (both are known networks which it should join automatically), so it should be no problem to automatically switch from one to the other. But instead of choosing the strongest signal, it tends to maintain 'connected' to its original signal as long as possible, even if this means a slow or bad connection.
If there are stronger known networks, this doesn't make sense... Is there any way to work around this? Otherwise an idea for Apple for future updates?
Kind regards,
Michael